Preprint describes macaque brain activity flipping between patterns linked to competing faces

Doris Tsao’s team showed two macaques different faces in each eye, and Nature reports that recorded activity alternated between face-linked patterns about 15 times per second. The researchers reconstructed images associated with both faces from neural activity. Which face the animals perceived is inferred from earlier experiments, not reported by the monkeys. The work is a preprint, and Science reports competing interpretations of the switching.